diff options
Diffstat (limited to 'base/gshtscr.c')
| -rw-r--r-- | base/gshtscr.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/base/gshtscr.c b/base/gshtscr.c index 29cd93e1..fe6a1c5a 100644 --- a/base/gshtscr.c +++ b/base/gshtscr.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2001-2021 Artifex Software, Inc. +/* Copyright (C) 2001-2022 Artifex Software, Inc. All Rights Reserved. This software is provided AS-IS with no warranty, either express or @@ -344,6 +344,15 @@ pick_cell_size(gs_screen_halftone * ph, const gs_matrix * pmat, ulong max_size, if (u0 == 0 && v0 == 0) return_error(gs_error_rangecheck); + + /* We increment rt in a loop below until (u+v) * rt + * is at least 4. Make sure that rt has enough range + * to satisfy that calculation. If it doesn't then + * give up (silly values). + */ + if ((fabs(u0) + fabs(v0)) < ((double)5.0 / max_int)) + return_error(gs_error_rangecheck); + while ((fabs(u0) + fabs(v0)) * rt < 4) ++rt; phcp->C = 0; |